Fabrication and mechanical characterization of carbon/SiC-epoxy nanocomposites

Chisholm, Nathaniel; Mahfuz, Hassan; Rangari, Vijaya K.; Adnan, Ashfaq; Jeelani, Shaik

doi:10.1016/j.compstruct.2004.01.010

Cited by 289 publications

(149 citation statements)

References 28 publications

(23 reference statements)

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“…Epoxy resins are used in a number of applications including coatings, adhesives, composites, and electrical insulation [10][11][12][13]. The composition and network structure of these cross-linked materials can vary greatly, yielding a range of different properties.…”

Section: Introductionmentioning

confidence: 99%

Multiscale Creep Compliance of Epoxy Networks at Elevated Temperatures

et al. 2006

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Epoxy networks are thermoset polymers for which an important structural length scale, molecular weight between crosslinks (M c ), influences physical and mechanical properties. In the present work, creep compliance was measured for three aliphatic epoxy networks of differing M c using both macroscale torsion and microscale depth-sensing indentation at temperatures of 25 and 55-C. Analytical relations were used to compute creep compliance (J(t)) for each approach; similar results were observed for the two techniques at 25-C, but not at 55-C. Although creep compliance measurement differed at elevated temperatures, there were clear correlations between M c , glass transition temperature, T g , and the observed time-dependent mechanical behavior via both techniques at 55-C, but these correlations could not be seen at 25-C. This work demonstrates the capacity of depth-sensing indentation to differentiate among epoxy networks of differing structural configurations via J(t) for small material volumes at elevated temperatures.

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Section: Introductionmentioning

confidence: 99%

Multiscale Creep Compliance of Epoxy Networks at Elevated Temperatures

et al. 2006

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“…These have been used as the matrices to manufacture a new class of FRPs, which have shown some remarkable improvements in mechanical properties. Various types of nano fillers such as carbon nanotubes and nanofibers, nanoclay, and SiO 2 and SiC nanoparticles [3][4][5][6][7][8][9] have been employed in the epoxy resin matrix to improve the fatigue and fracture properties of the epoxy polymeric matrices and the resulting fiber composite materials.…”

Section: Introductionmentioning

confidence: 99%

Improved variable-amplitude fatigue behavior of a glass-fiber-reinforced hybrid-toughened epoxy composite

Manjunatha¹,

Jagannathan²,

Padmalatha³

et al. 2011

Journal of Reinforced Plastics and Composites

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A thermosetting epoxy polymer was hybrid-modified by the addition of 9 wt.% of rubber microparticles and 10 wt.% of silica nano-particles. Glass-fiber reinforced plastic (GFRP) composite laminates employing the unmodified epoxy matrix (GFRP-neat), and the hybrid epoxy matrix (GFRP-hybrid), were produced by a resin infusion technique. The experimental fatigue lives of both GFRP composites under three different variable amplitude load sequences, namely (i) a three-step increasing block, (ii) a three-step decreasing block and, (iii) a random block load sequence derived from a three-step load block, were determined. The fatigue life of the GFRPhybrid composite was higher than that of the GFRP-neat composite under all the three load sequence blocks investigated, by about x2.6 to x4.0 times. The saturated matrix crack density and the stiffness reduction rate were both lower in the GFRP-hybrid composite compared to the GFRP-neat composite material. The suppressed matrix cracking and reduced delamination growth rates measured in the hybrid-modified epoxy matrix enhanced the fatigue life of the corresponding GFRP-hybrid composite. Using the constant amplitude fatigue data generated at various stress ratios, the fatigue lives under these variable amplitude load sequence blocks were predicted using empirical models. The predicted fatigue lives, although non-conservative, were in reasonably agreement with the experimental results.

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“…Enhancement of toughness is affected by the propagation of cracks and reduces the growth of nanopores. While CNTs and other nanoparticles can improve a few of the properties of composites, others investigations [171][172][173] indicated that it also resulted in reduction of some of the mechanical properties.…”

Section: Nanofillers In Polymermentioning

confidence: 99%

“…Chisholm et al [173] utilized 1.5 to 3.5 wt% SiC (silicon carbide) dispersed in the epoxy polymer and carbon fiber (satin weave) for manufacturing multiscale composites by a resin infusion process. The composites reinforced with 1.5 wt% SiC displayed an enhancement in tensile strength (up to 16%) and tensile modulus (up to 45%) of the composites.…”

Section: Nanofillers In Polymermentioning

confidence: 99%

Multiscale Polymer Composites: A Review of the Interlaminar Fracture Toughness Improvement

Dikshit

Bhudolia

Joshi

2017

Fibers

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Abstract:Composite materials are prone to delamination as they are weaker in the thickness direction. Carbon nanotubes (CNTs) are introduced as a multiscale reinforcement into the fiber reinforced polymer composites to suppress the delamination phenomenon. This review paper presents the detailed progress made by the scientific and research community to-date in improving the Mode I and Mode II interlaminar fracture toughness (ILFT) by various methodologies including the effect of multiscale reinforcement. Methods of measuring the Mode I and Mode II fracture toughness of the composites along with the solutions to improve them are presented. The use of different methodologies and approaches along with their performance in enhancing the fracture toughness of the composites is summarized. The current state of polymer-fiber-nanotube composites and their future perspective are also deliberated.

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Fabrication and mechanical characterization of carbon/SiC-epoxy nanocomposites

Cited by 289 publications

References 28 publications

Multiscale Creep Compliance of Epoxy Networks at Elevated Temperatures

Multiscale Creep Compliance of Epoxy Networks at Elevated Temperatures

Improved variable-amplitude fatigue behavior of a glass-fiber-reinforced hybrid-toughened epoxy composite

Multiscale Polymer Composites: A Review of the Interlaminar Fracture Toughness Improvement

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